IE3 → IE4 Motor Energy Payback Calculator

ROI Tool

IE3 → IE4 Motor Energy Payback Calculator

Calculate the annual energy savings and payback period when you upgrade a standard IE3 motor to premium-efficiency IE4 on a continuously operating multistage pump.

Motor Power (kW)

Operating Hours / Year

Electricity Rate ($/kWh)

IE4 Motor Premium ($)

Upgrade Economics

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USD / Year Saved

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kWh / Year Saved

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Payback (Years)

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5-Year Net Savings ($)

Assumptions: 2.5% efficiency uplift from IE3 → IE4 (Grundfos technical leaflet and MDPI 2020 study). IE3 baseline efficiency 95%. Straight-line payback; does not include O and M savings from reduced motor heat and winding wear.

Specify IE4 on My Beibangpu Quote →